src/hotspot/share/runtime/os.cpp

rev 50554 : webrev.02

*** 74,83 ****
--- 74,88 ----
  address           os::_polling_page       = NULL;
  volatile int32_t* os::_mem_serialize_page = NULL;
  uintptr_t         os::_serialize_page_mask = 0;
  volatile unsigned int os::_rand_seed      = 1;
  int               os::_processor_count    = 0;
+ bool              os::_nvdimm_present     = false;
+ int               os::_nvdimm_fd          = -1;
+ address           os::_dram_heap_base     = NULL;
+ address           os::_nvdimm_heap_base   = NULL;
+ uint              os::_nvdimm_region_length = 0;
  int               os::_initial_active_processor_count = 0;
  size_t            os::_page_sizes[os::page_sizes_max];
  
  #ifndef PRODUCT
  julong os::num_mallocs = 0;         // # of calls to malloc/realloc
*** 1744,1762 ****
--- 1749,1790 ----
      MemTracker::record_virtual_memory_commit((address)addr, bytes, CALLER_PC);
    }
    return res;
  }
  
+ bool os::commit_memory(char* addr, size_t size, bool executable, int file_desc, size_t offset) {
+   
+   bool res = false;
+   
+   if (os::map_memory_to_file(addr, size, file_desc, offset, executable, false) != NULL) {
+     MemTracker::record_virtual_memory_commit((address)addr, size, CALLER_PC);
+     return true;
+   }
+   return false;
+ }
+ 
  bool os::commit_memory(char* addr, size_t size, size_t alignment_hint,
                                bool executable) {
    bool res = os::pd_commit_memory(addr, size, alignment_hint, executable);
    if (res) {
      MemTracker::record_virtual_memory_commit((address)addr, size, CALLER_PC);
    }
    return res;
  }
  
+ bool os::commit_memory(char* addr, size_t size, size_t alignment_hint,
+                               bool executable, int file_desc, size_t offset) {
+   
+   // ignoring alignemnt hint.
+   bool res = false;
+   if (os::map_memory_to_file(addr, size, file_desc, offset, executable, false) != NULL) {
+     MemTracker::record_virtual_memory_commit((address)addr, size, CALLER_PC);
+     return true;
+   }
+   return false;
+ }
+ 
  void os::commit_memory_or_exit(char* addr, size_t bytes, bool executable,
                                 const char* mesg) {
    pd_commit_memory_or_exit(addr, bytes, executable, mesg);
    MemTracker::record_virtual_memory_commit((address)addr, bytes, CALLER_PC);
  }